Driving and operating 173Driver assistancesystems9 WarningDriver assistance systems aredeveloped to support the driverand not to replace the driver'sattention.The driver accepts fullresponsibility when driving thevehicle.When using driver assistancesystems, always take careregarding the current trafficsituation.Cruise controlThe cruise control can store andmaintain speeds of approx. 20 to120 mph. Deviations from the storedspeeds may occur when driving uphillor downhill.For safety reasons the cruise controlcannot be activated until the footbrake has been operated once.Activating in first gear is not possible.Do not use the cruise control if it is notadvisable to maintain a constantspeed.With automatic transmission, onlyactivate cruise control in automaticmode.Control indicator m 3 109.Switching onPress button m, control indicator m ininstrument cluster illuminates white.ActivationAccelerate to the desired speed andturn thumb wheel to SET/-: thecurrent speed is stored andmaintained. Control indicator m ininstrument cluster illuminates green.Set speed is indicated on midlevel oruplevel display near m symbol.Accelerator pedal can be released.Vehicle speed can be increased bydepressing the accelerator pedal.When the accelerator pedal isreleased, the previously stored speedis resumed.Cruise control remains activatedwhile gearshifting.
